pg_create_instance_trigger.sql (2528B)
1 -- 2 -- This file is part of TALER 3 -- Copyright (C) 2026 Taler Systems SA 4 -- 5 -- TALER is free software; you can redistribute it and/or modify it under the 6 -- terms of the GNU General Public License as published by the Free Software 7 -- Foundation; either version 3, or (at your option) any later version. 8 -- 9 -- TALER is distributed in the hope that it will be useful, but WITHOUT ANY 10 -- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR 11 -- A PARTICULAR PURPOSE. See the GNU General Public License for more details. 12 -- 13 -- You should have received a copy of the GNU General Public License along with 14 -- TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/> 15 -- 16 17 DROP FUNCTION IF EXISTS merchant.merchant_instances_after_insert_trigger() CASCADE; 18 CREATE FUNCTION merchant.merchant_instances_after_insert_trigger() 19 RETURNS trigger 20 LANGUAGE plpgsql 21 AS $$ 22 BEGIN 23 PERFORM merchant.create_instance_schema(NEW.merchant_serial); 24 IF NEW.email IS NOT NULL 25 THEN 26 CALL merchant.merchant_send_signup_notification(NEW.merchant_serial, 27 NEW.email); 28 END IF; 29 RETURN NEW; 30 END $$; 31 COMMENT ON FUNCTION merchant.merchant_instances_after_insert_trigger() 32 IS 'Builds the per-instance schema merchant_instance_<merchant_serial>' 33 ' for the newly inserted row and, if the instance has an e-mail' 34 ' address, queues the sign-up message to it.'; 35 36 DROP TRIGGER IF EXISTS merchant_instances_on_insert 37 ON merchant.merchant_instances; 38 CREATE TRIGGER merchant_instances_on_insert 39 AFTER INSERT 40 ON merchant.merchant_instances 41 FOR EACH ROW 42 EXECUTE FUNCTION merchant.merchant_instances_after_insert_trigger(); 43 44 45 DROP FUNCTION IF EXISTS merchant.merchant_instances_after_delete_trigger() CASCADE; 46 CREATE FUNCTION merchant.merchant_instances_after_delete_trigger() 47 RETURNS trigger 48 LANGUAGE plpgsql 49 AS $$ 50 BEGIN 51 EXECUTE format('DROP SCHEMA IF EXISTS %I CASCADE', 52 'merchant_instance_' || OLD.merchant_serial::TEXT); 53 RETURN NULL; 54 END $$; 55 COMMENT ON FUNCTION merchant.merchant_instances_after_delete_trigger() 56 IS 'Drops the per-instance schema merchant_instance_<merchant_serial>' 57 ' when its row in merchant.merchant_instances is removed.'; 58 59 DROP TRIGGER IF EXISTS merchant_instances_on_delete 60 ON merchant.merchant_instances; 61 CREATE TRIGGER merchant_instances_on_delete 62 AFTER DELETE ON merchant.merchant_instances 63 FOR EACH ROW 64 EXECUTE FUNCTION merchant.merchant_instances_after_delete_trigger();